![Audel HVAC Fundamentals, Volume 3: Air Conditioning, Heat Pumps and Distribution Systems: Brumbaugh, James E.: 0785555872691: Amazon.com: Books Audel HVAC Fundamentals, Volume 3: Air Conditioning, Heat Pumps and Distribution Systems: Brumbaugh, James E.: 0785555872691: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51r%2BCukLUzL._SY291_BO1,204,203,200_QL40_ML2_.jpg)
Audel HVAC Fundamentals, Volume 3: Air Conditioning, Heat Pumps and Distribution Systems: Brumbaugh, James E.: 0785555872691: Amazon.com: Books
![Residential Heat Pumps: Installation and Troubleshooting: Sutphin, S. E.: 9780137746132: Amazon.com: Books Residential Heat Pumps: Installation and Troubleshooting: Sutphin, S. E.: 9780137746132: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/51djeKgi0RL._SX346_BO1,204,203,200_.jpg)
Residential Heat Pumps: Installation and Troubleshooting: Sutphin, S. E.: 9780137746132: Amazon.com: Books
![Geothermal Heat Pumps: A Guide for Planning and Installing: Ochsner, Karl: 9781844074068: Amazon.com: Books Geothermal Heat Pumps: A Guide for Planning and Installing: Ochsner, Karl: 9781844074068: Amazon.com: Books](https://images-na.ssl-images-amazon.com/images/I/41Sq%2BqsZLQL._SY291_BO1,204,203,200_QL40_ML2_.jpg)
Geothermal Heat Pumps: A Guide for Planning and Installing: Ochsner, Karl: 9781844074068: Amazon.com: Books
![Geo Power: Stay Warm, Keep Cool and Save Money with Geothermal Heating & Cooling: Amazon.co.uk: Lloyd, Donal Blaise, Muhammad, Lawrence A.: 9781936555581: Books Geo Power: Stay Warm, Keep Cool and Save Money with Geothermal Heating & Cooling: Amazon.co.uk: Lloyd, Donal Blaise, Muhammad, Lawrence A.: 9781936555581: Books](https://images-na.ssl-images-amazon.com/images/I/81+3NRHCaQL.jpg)